Browsing by Author "Arnold, L. Eugene"

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    Children's Yale-Brown Obsessive Compulsive Scale Modified for Pervasive Developmental Disorders
    Scahill, Lawrence; McDougle, Christopher J.; Williams, Susan K.; Dimitropoulos, Anastasia; Aman, Michael G.; McCracken, James T.; Tierney, Elaine; Arnold, L. Eugene; Cronin, Pegeen; Grados, Marco; Ghuman, Jaswinder; Koenig, Kathleen; Lam, Kristen S. L.; McGough, James; Josey, David J.; Ritz, Louise; Swiezy, Naomi B.; Vitiello, Benedetto (Elsevier, 2014-01-01)
    Objective: To examine the psychometric properties of the Children's Yale-Brown Obsessive Compulsive Scales (CYBOCS) modified for pervasive developmental disorders (PDDs). Method: Raters from five Research Units on Pediatric Psychopharmacology (RUPP) Autism Network were trained to reliability. The modified scale (CYBOCS-PDD), which contains only the five Compulsion severity items (range 0-20), was administered to 172 medication-free children (mean 8.2 ± 2.6 years) with POD (autistic disorder, n = 152; Asperger's disorder, n = 6; POD not otherwise specified, n = 14) participating in RUPP clinical trials. Reliability was assessed by intraclass correlation coefficient (ICC) and internal consistency by Cronbach's a coefficient. Correlations with ratings of repetitive behavior and disruptive behavior were examined for validity. Results: Eleven raters showed excellent reliability (ICC= 0.97). The mean CYBOCS score was 14.4 (± 3.86) with excellent internal consistency (α = .85). Correlations with other measures of repetitive behavior ranged from r = 0.11 to r = 0.28 and were similar to correlations with measures of irritability (r = 0.24) and hyperactivity (r = 0.25). Children with higher scores on the CYBOCS-PDD had higher levels of maladaptive behaviors and lower adaptive functioning. Conclusions: The five- item CYBOCS-PDD is reliable, distinct from other measures of repetitive behavior, and sensitive to change.